tce-load -i gnome-icon-theme gtkmm-dev libgtop-dev librsvg-dev libwnck-dev itstool

cd gnome-system-monitor-3.22.0

CC="gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe" ./configure --prefix=/usr/local --disable-static --localstatedir=/var --libexecdir=/usr/local/lib --enable-wnck

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make
sudo make install

Configuration:

        Source code location:   .
        C Compiler:             gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe
        C++ Compiler:           g++ -flto -fuse-linker-plugin -mtune=generic -Os -pipe
        CFLAGS:                     -Wall     -Winline     -Wchar-subscripts -Wmissing-declarations -Wmissing-prototypes     -Wnested-externs -Wpointer-arith     -Wcast-align -Wsign-compare     -g -O2
        CXXFLAGS:               -Wall -g -O2 -std=gnu++11
        Maintainer mode:        yes
        systemd support:        no
        wnck support:           yes